Combined gas regulator and cut-off.



J. J. HEITZ. COMBINED GAS REGULATOR AND CUT-OFF. APPLICATION FILED we.a, 1910.

993, 1 64. Patented May 23, 1911.

3 SHEETS-SHEET 1- I :2 I I v TOR WWW J. J. HEITZ.

COMBINED GAS REGULATOR AND GUT-OFF.

APPLIOATIOIN rum) AUG. 8, 1910.

Patented May 23, 1911.

3 SHEETS-SHEET 2.

FIRE.

a7 as c o 11 C o 19 o C 12 INVENTOR J. J. HBITZ. COMBINED GAS REGULATORAND GUT-OFF.

APPLICATION FILED AUG.8,1910. 993,164, Patented May 23,1911.

3 BHEETB-SEEET 3.

WITNESSES. VENTOR gflwaaw y. H. Mg W Lu my JOHN J. HEITZ, OF PITTSBURG,PENNSYLVANIA.

COMBINED G AS REGULATOR AND CUT-OFF.

Specification 0! Letters I'atent.

Patented May 23, 1911.

Application flied August 8, 1910. Serial No. 578,206.

To all whom it may concern:

Be it known that I, JOHN J. HEITZ residing at Pittsburg, in the countyof Allegheny and State of Pennsylvania, a citizen of the United States,have invented or discovered certain new and useful Improvements inCombined Gas Regulal'tors and Cut-Offs, of which improvement thefollowing is a specification.

' The invention described herein relates to certain improvements in gasregulators and cut-ofl's, and is hereinafter more fully described andclaimed.

In the accompanying drawings forming a part of this specification,Figure 1 is a side elevation of my improved re lator and cutoff; Fi 2 isa sectional eevation of the same; ig. 3 isa sectional view on a planeindicated by the line III-III Fig. 1, Fig. 4 is a sectional viewindicated by the line IV-IV Fig. 3; Figs. 5 and 6 are face views of themain valve and its seat respectively.

In the practice of my invention, I employ a shell or casing 1 which isdivided into receiving and outlet chambers a and b by a partition 2.Through one head as 3 of this shell areformed ports 4 and 5 connectedrespectively with the chambers a and b. The outer face of this head 3serves as a seat or face for a disk valve 6 which is provided withcurved passages 0 adapted in certain positions of the valve to connectthe ports 4 with the ports 5 permittin the flow of gas from thereceiving to the out et chamber. This disk valve is held to seat by asprin 7 interposed between the valve and an a justable abutment 8arranged in the cover 9. This cover which is secured to a flange 10 onthe shell 1 is connected so as to provide sufficient space for the freemovements of the arms 11 and 12 pro'ecting radially from the valve. Itis pre erred that the screw for adjustin the tension of spring 7 shouldbe protecte by a cap 13 removablyzattached to the cover. The head 14 ofthe shell 1 is also rovided with ports 15 and 16 connected to t echambers a and b and adapted to be connected one to the other b a curvedpassage d in the disk valve 17. his valve which is held to its seat inthe head 14 by a spring 18 is provided with a stem 19 projecting outthrough a stufiing box 20 in the cap 21 secured to the shell 1 andinclosing the valve 17. The valve 17 is normally held in closed positionby a spring 22 the movement of the handle being limited by the stop 23.

The cover 19 is provided with a hollow neck '24 which is attached to anip le 25 on the lower section 26 of the diapli shell as shown in Fi 2.A rod 27 which is attached to the 1a hra m 28 I extends through the niple an use and is connected to the radia arm 12 of the valve 6 so thatthe diaphragm may shift the valve as the former is affected by pressureof gas in the chamber formed by the diaphragm and the upper section 29between which and the section 26 the edges of the diaphragm are clamped.connected to one end of a spring 30 having its opposite end connected toa swivel block 31 on the end of the adjusting screw 32 as shown in Fig.2. This spring is arranged to shift the valve 6 and diaphragm inopposition to gas pressure above the dlaphragm. An adjustables ringcushion 33 is arranged in the path o movement of a part or elementmovable by the diaphragm and is designed to reinforce under certainconditions, the action of the spring 30.

The chamber a is connected to the supply pipe 34 and the chamber 6 thehouse service ine 35 from which extends a branch pipe 36 to the chamberabove the diaphragm so that the latter is subjected only to houseservice pressure. The working pressure is determined by the spring 30which when there is no pressure above the diaphragm will shift the valve6 to closed position. In order to start the regulator the valve 17 isshifted by hand to permit a flow of gas from the chamber a to thechamber b and thence to the chamber above the diaphragm. As soon as thediaphragm is moved to open the valve 6, the handle of the valve 17 isreleased to permit the spring 22 to close the by-pass valve 17. a

In order to .prevent the valve 6 being shifted on a sudden increase ofpressure sufiiciently far to close the ports 4 and 5 the 5 ring cushionis so adjusted as to present its resistance to such excess of movement.

In order to facilitate the adjustment of the regulator a pressureindicator is pro vided. This consists of a rod 37 having its lower endconnected by a flexible joint 38 to the diaphragm and extending us intoa glasstube 39 aving its upper en closed ragm The arm 11 of'the valve 6is in any suitable manner and its lower end extending through a stufiingbox 40 into a nipple'on the section 29 of the diaphragm shell. The tubeis protected by posts 40 formed integral with the section 29 and theseposts are provided with a pressure indicating scale along which a fingeron the rod 37 moves as the diaphragm is shifted.

I' claim herein as my invention 1. A combined gas regulator and cut-offhaving in-combination a case or shell having receiving and outletchambers and having a head provided with ports connected respectivelywith said chambers, a valve rotatably seated on the 'head and providedwith a passage adapted to connect such ports, a cover inclosing thevalve secured to the case or shell and provided with means for holdingthe valve to its seat, a diaphragm for rotating said Valve and a springacting in opposition to diaphragm when shifted by pressure of gas andconnected to the valve.

2. A combined gas regulator and cut-ofi' having in combination a case orshell having receiving and outlet chambers and having a head providedwith ports connecting respectively with said chambers a valve rotatablyseated on the head and provided with a passage adapted to connect saidports, a diaphragm for rotating said valve, a spring connected to thevalve and acting in opposition to the diaphragm when shifted by pressureof gas and a spring arranged to reinforce the first spring.

3. A combined gas regulator and cut-01f having in combination a case orshell having receiving and outlet chambers and having heads providedwith ports connecting respectively with said chambers, valves rotatablyseated on said heads and provided with passages adapted in certainpositions to connect the ports in'heads one of said Valves beingnormally closed, a diaphragm and a spring connected to the other valveand arranged to act in opposition one to the other in shifting saidValve.

In testimony whereof, I have hereunto se my hand.

JOHN J. HEITZ. Witnesses:

G. G. TRILL HAROLD G. domes.

